Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision engineering and smooth tuning stability with an improved 1:18 gear ratio. Designed with CNC-machined brass string posts and high-grade internal components, it ensures delicate, consistent, and wear-free operation.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post without requiring a stepped peghead bore. This advanced design effectively eliminates tilting torque and reduces mechanical stress on both the string post and rear mounting screws.
Permanently lubricated with Schaller special grease, all enclosed housings remain completely maintenance-free throughout their lifespan. With identical mounting dimensions to its classic predecessor, it offers a direct replacement solution without requiring instrument modifications.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.8 lb |
| Weight per Tuner (Small/Large Button) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Material | Brass Posts, CNC Machined |
| Lubrication | Maintenance-free Schaller Special Grease |




















